At least three people died of watery diarrhoea while over 200 were ailing from the disease in Orissa's Balasore district where floods have played havoc, officials said Saturday.
The disease has gripped over 20 villages including Basta, Baliapal, Bhogarai and Jaleswar, a district health official said.
At least 84 people from these villages were admitted in different health centres in the district while health officials were taking care of others in their respective villages, additional district medical officer R.N. Pati said.
Those who died of the disease were identified as Samaya Hansda, 6, Bhabani Jena, 42, and Gourahari Patra.
The rains caused by a depression over the Bay of Bengal had led to flash floods in at least 11 of the state's 30 districts. At least 30 people were killed and over one and half million were affected by the flood.
The worst hit was Balasore district, some 200 km from state capital Bhubaneswar, where the floods killed at least 20 people and affected more than half a million.